Entries Tagged 'lab Supplies' ↓

Why did photosynthesis not take place inside a plastic bag?

I have a lab write up revolving around this question. we are supposed to figure it out by drawing conclusions, but I can't figure it out.

There was an experiment. two plants, each supplied with water and CO2. One was inside a black trash bag, the other was inside a clear plastic bag. For both of the plants, the CO2 increased, and oxygen inside the bag stayed the same.

For the second experiment, a few severed leaves were placed inside a glass container, supplied with water and CO2. The oxygen level increased while the CO2 decreased. why is this?
Is it because the plastic does now allow certain light wavelengths through?

Where in the internet can i get class 10 science lab manual for studying?

i want to study for science practical skills exam which is approaching. i do not have any science lab manual for studying.i want to know from which website i can study lab manuals like saraswati or goyal. its very urgent as its my board exam and i hav to study . pls help!!!!!!!!!!!!